feat(littleblue): discovered services show matching network-device name

Cross-references each candidate host IP with lan_devices (known) so a tile shows
e.g. 'H Tower' instead of '192.168.1.15:32400'.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

public/views/health_band.js

@@ -61,8 +61,8 @@ async function discoveredSection() {
     el('div', { class: 'tiles' }, cand.map(c =>
       el('div', { class: 'tile disc' },
         el('div', { class: 'tile-main' },
-          el('div', { class: 'tile-nm' }, c.name),
-          el('div', { class: 'tile-host' }, c.url)),
+          el('div', { class: 'tile-nm' }, c.device || c.name),
+          el('div', { class: 'tile-host' }, c.device ? `${c.name} · ${c.url}` : c.url)),
         el('button', { class: 'disc-add', title: 'Add to the band', onclick: () => promote(c.id) }, '+')))));
 }